parse JSON and saving data to the realm is it possible? - json

Question

struct NewsModel: Codable{
let id: Int?
let title, newsModelDescription: String?
let sourceID, version: String?
let publishedAt: Int
let readablePublishedAt: String?
let updatedAt: Int
let readableUpdatedAt: String
let images: Images
let embedTypes: String?
let typeAttributes: TypeAttributes
let type: String?
let source: String?
enum CodingKeys: String, CodingKey {
case id, title
case newsModelDescription
case sourceID
case version, publishedAt, readablePublishedAt, updatedAt, readableUpdatedAt, embedTypes, images,typeAttributes, type, source
}
}
// MARK: - Images
struct Images: Codable {
let square140: String
enum CodingKeys: String, CodingKey {
case square140 = "square_140"
}
}
struct TypeAttributes: Codable {
let imageLarge: String
}
This is my Model. I can successfully parse them and show them on UITableViewCell but I am unable to save them to the realm because these are struct. For save to realm I need to convert them to class and Realm object. But how I convert them to nested class. I want to use the same model to parse and saving data to the realm is it possible?

Answer 1

There are probably 100 different solutions. One option is to just make the object a Realm object that's conforms to the codable protocol. Something like this (not tested: so more of a conceptual solution)
class NewsModel: Object, Codable {
#objc dynamic var _id = UUID().uuidString
#objc dynamic var title = ""
#objc dynamic var news = ""
private enum CodingKeys: String, CodingKey {
case _id
case title
case news
}
override class func primaryKey() -> String? {
return "_id"
}
public required convenience init(from decoder: Decoder) throws {
self.init()
let container = try decoder.container(keyedBy: CodingKeys.self)
self._id = try container.decode(String.self, forKey: ._id)
self.name = try container.decode(String.self, forKey: .title)
self.logo = try container.decode(String.self, forKey: .news)
}
or change the model in the question to a class and add a function to save a realm object with the data. Again, not tested so this is just conceptual.
class RealmNewsModel: Object {
#objc dynamic var _id = ""
#objc dynamic var title = ""
#objc dynamic var news = ""
}
class NewsModel, Codable {
let _id: String?
let title: String?
let news: String?
func saveToRealm {
let news = RealmNewsModel()
news._id = self._id
news.title = self.title
news.news = self.news
try! realm.write {
realm.add(news)
}